97640349455 has 32 divisors (see below), whose sum is σ = 133447730688. Its totient is φ = 67887952000.

The previous prime is 97640349437. The next prime is 97640349511. The reversal of 97640349455 is 55494304679.

It is not a de Polignac number, because 97640349455 - 2⁸ = 97640349199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97640349455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2506880 + ... + 2545530.

It is an arithmetic number, because the mean of its divisors is an integer number (4170241584).

Almost surely, 2^97640349455 is an apocalyptic number.

97640349455 is a deficient number, since it is larger than the sum of its proper divisors (35807381233).

97640349455 is a wasteful number, since it uses less digits than its factorization.

97640349455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40687.

The product of its (nonzero) digits is 16329600, while the sum is 56.

The spelling of 97640349455 in words is "ninety-seven billion, six hundred forty million, three hundred forty-nine thousand, four hundred fifty-five".